<template>
  <div>
    <!-- 这是顶部的滑动条区域 -->
    <div id="slider" class="mui-slider">
      <div
        id="sliderSegmentedControl"
        class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted"
      >
        <div class="mui-scroll">
          <a
            :class="[ 'mui-control-item', category.id==0 ? 'mui-active' : '' ]"
            v-for="category in photocategory"
            :key="category.id"
            @click="getphotolist(category.id)"
          >{{category.title}}</a>
        </div>
      </div>
    </div>
    <!-- 这是图片列表区域 -->
    <ul class="photolistcon">
      <router-link v-for="item in photolist" :key="item.id" :to="'/home/photoinfo/'+item.id+'/'" tag="li">
        <img v-lazy="item.img_url">
        <div class="info">
            <h1 class="info-title">{{item.title}}</h1>
            <div class="info-body">{{item.zhaiyao}}</div>
        </div>
      </router-link>
    </ul>
  </div>
</template>
<script>
// 导入mui的js文件
import mui from "../../lib/mui/js/mui.min.js";

export default {
  data() {
    return {
      photocategory: [],
      photolist: []
    };
  },
  created() {
    this.getphotocategory();
    // 默认第一次加载全部图片列表
    this.getphotolist(0);
  },
  mounted() {
    // 初始化mui的scroll组件
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getphotocategory() {
      this.$http.get("/api/getimgcategory").then(result => {
        if (result.data.status === 0) {
          // 增加一个全部
          result.data.message.unshift({ id: 0, title: "全部" });
          this.photocategory = result.data.message;
        }
      });
    },
    getphotolist(cateid) {
      this.$http.get("api/getphotolist/" + cateid + "/").then(result => {
        if (result.data.status === 0) {
          this.photolist = result.data.message;
        }
      });
    }
  }
};
</script>
<style lang="scss" scoped>
* {
  touch-action: pan-y;
}
.photolistcon {
    list-style: none;
    margin: 0;
    padding: 10px;
    padding-bottom: 0;
  li {
      text-align: center;
      background-color: #ccc;
      margin-bottom: 10px;
      box-shadow: 0 0 9px #999;
      position: relative;
    img{
        width: 100%;
        
        vertical-align: middle;
    }
    .info{
        color: white;
        text-align: left;
        position: absolute;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.4);
        width: 100%;
        max-height: 80px;
        .info-title{
            font-size: 14px;
        }
        .info-body{
            font-size: 13px;
        }   
    }
    img[lazy="loading"] {
    width: 40px;
    height: 300px;
    margin: auto;
  }
  }
}

</style>
